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Induced transitions between Wannier ladders

  • We study the transitions between the ground and excited Wannier states induced by a weak ac field. Because the upper Wannier states are several order of magnitude less stable than the ground states, these transitions decrease the global stability of the system characterized by the rate of probability leakage or decay rate. Using nonhermitian resonant perturbation theory we obtain an analytical expression for this induced decay rate. The analytical results are compared with exact numerical calculations of the system decay rate.

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Author:Markus Glück, Hankel Michael, Andrey R. Kolovsky, Hans Jürgen Korsch
URN (permanent link):urn:nbn:de:hbz:386-kluedo-10101
Document Type:Article
Language of publication:English
Year of Completion:2000
Year of Publication:2000
Publishing Institute:Technische Universität Kaiserslautern
Date of the Publication (Server):2000/03/10
Tag:Quantum mechanics; Wannier-Stark systems; decay rate; nonhermitian perturbation theory
Faculties / Organisational entities:Fachbereich Physik
DDC-Cassification:5 Naturwissenschaften und Mathematik / 530 Physik
Licence (German):Standard gemäß KLUEDO-Leitlinien vor dem 27.05.2011